GE IC695PSA040J – PACSystems RX3i 40W AC Power Supply for CPU and I/O Bases

The IC695PSA040J is the 40 W AC-input power supply for GE PACSystems RX3i bases. It sits in the leftmost power position of an IC695CHSxxx base and provides regulated backplane power to the CPU and installed I/O modules. From my experience, the “J” hardware revision typically indicates later component updates and improved lifecycle stability, which many plants prefer when standardizing spares.

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Key Features

• Universal AC input (40 W) – Operates on wide-range mains (typically 85–264 VAC, 47–63 Hz) for global deployments.
• Backplane power for RX3i – Supplies regulated power to CPU and modules; no user I/O wiring, which keeps panel wiring simple.
• Compact 1-slot form factor – Leaves more slots for I/O; fits standard IC695CHS007/012/016 bases.
• Field-proven reliability – In many cases, later “J” revisions show better availability and long-term support.
• Status LEDs you can read at a glance – You might notice faults are easy to diagnose during commissioning.
• Fits mixed systems – Works across typical RX3i configurations, from small machinery to mid-size processes.
• Straightforward replacement – Slide-in swap with minimal downtime, especially helpful in 24/7 plants.
• Low heat footprint – Generally runs cool, reducing the burden on cabinet ventilation.

Technical Specifications

Related and Supporting Products

• IC695PSD040 – 40 W, 24 VDC-input RX3i power supply (use when a DC bus is available).
• IC695PSB040 – 40 W AC-input variant; chosen in some projects based on availability or revision alignment.
• IC695CHS007 / IC695CHS012 / IC695CHS016 – 7-, 12-, and 16-slot RX3i bases compatible with IC695PSA040J.
• IC695CPU310/IC695CPU315 – RX3i CPUs frequently paired with the PSA040 family in standard control racks.

One thing I appreciate is how easily the IC695PSA040J drops into mixed systems—many teams keep both AC (PSA/PSB) and DC (PSD) supplies on the shelf so they can standardize the rack while matching the site’s power.

Installation & Maintenance

• Cabinet & mounting – Install the power supply in the leftmost slot of the IC695CHSxxx base; mount the base on a bonded panel in a clean, dry enclosure.
• Ventilation – Provide natural airflow; in most cases, 50 mm clearance above/below modules helps keep temperatures in spec.
• Wiring – Feed from a protected AC circuit with proper earth ground; use ferrules and segregate mains from low-voltage I/O wiring.
• Load planning – Verify total rack power draw vs. 40 W capacity; plan for startup inrush and any peak loads from specialty modules.
• Safety – De-energize before insertion/removal; allow capacitors to discharge before handling.
• Routine care – Quarterly dust removal with dry air; inspect base contacts; check LED status during PM rounds.

From my experience, a quick power budget check during design avoids nuisance brownouts when adding communication or analog modules later.

Quality & Certifications

• Certifications: CE, UL/cUL, RoHS (typical for PACSystems RX3i power supplies)
• Manufacturer quality: produced under ISO 9001 processes in most cases
• Warranty: 365-day warranty from us on this module